Battery pack mounting structure and mower

Abstract

The utility model discloses a battery pack installation structure which comprises an installation cavity formed in a mower and used for containing a battery pack, a limiting structure used for limiting the battery pack and / or a battery pack support is arranged in the installation cavity, and the battery pack is arranged in the battery pack support. The utility model further discloses the mower. The opening of the mounting cavity of the battery pack faces the ground and is arranged at the bottom of the shell of the mowing machine, so that the occupation of the battery pack mounting structure on the surface space of the mowing machine is reduced, and a small-sized mowing machine, such as a robot mowing machine, has a larger internal mounting space for parts.

Description

Technical Field

[0001] The utility model belongs to the technical field of garden tools, and in particular relates to a battery pack installation structure and a lawn mower. Background Art

[0002] The battery pack of a lawn mower is usually placed upright inside the lawn mower. For large lawn mowing equipment, the space occupied by the battery pack when placed upright is very small, which is a conventional method of placing the battery pack. However, for smaller smart lawn mowers, the upright battery pack takes up too much surface space, sacrificing the layout space of other components, which is not conducive to the miniaturization design of the smart lawn mower. Therefore, how to design a battery pack installation structure that takes up less space on a lawn mower with limited space, such as a smart lawn mower, is the first technical problem that needs to be solved in this field.

[0003] In addition, when the battery pack is installed in the housing cavity of the lawn mower, if the internal structure of the housing cavity is not properly set, the battery pack is easily displaced due to the vibration caused by the bumps during the operation of the lawn mower, thereby generating noise or being damaged. Therefore, how to design a battery pack installation structure with strong vibration resistance and reduced probability of battery pack damage is the second technical problem to be solved in this field. Utility Model Content

[0004] The utility model aims to reduce the space occupied by the battery pack installation structure of the lawn mower, and to provide a battery pack installation environment with strong vibration resistance and a low probability of the battery pack being damaged due to the vibration of the lawn mower, and provides a battery pack installation structure and a lawn mower.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A battery pack mounting structure comprises a mounting cavity provided on a lawn mower for accommodating a battery pack, wherein a limiting structure for limiting the battery pack and / or a battery pack bracket is provided in the mounting cavity, and the battery pack is arranged in the battery pack bracket.

[0007] Furthermore, the installation cavity is arranged at the bottom of the housing of the lawn mower, and its opening faces the ground.

[0008] Furthermore, the installation cavity is arranged between the travel wheel shaft and the mowing disc of the lawn mower.

[0009] Furthermore, the shell of the installation cavity (11) is distributed on both sides of the center position of the running wheel axle, and the straight-line distance between the shell of the installation cavity (11) distributed on the left and right and the center position of the running wheel axle is between 50-100 mm, and the straight line is parallel to the running wheel axle.

[0010] Furthermore, the limiting structure includes a first limiting rib and / or a second limiting rib arranged on the side wall of the installation cavity. After the battery pack is inserted into the battery pack holder and placed as a whole in the installation cavity, the side plate of the battery pack holder, the first limiting rib and / or the second limiting rib are pressed against the side plate of the battery pack holder and against the side wall of the battery pack.

[0011] Furthermore, the battery pack installation structure also includes an outer cover for covering the installation cavity, a sealing ring groove is arranged around the peripheral wall of the installation cavity, a sealing ring is arranged at the sealing ring groove, and a surrounding flange is arranged on the outer cover for covering the installation cavity, and the installation cavity is interference fit with the flange through the sealing ring to seal and fix the outer cover to the installation cavity.

[0012] Furthermore, a limiting portion for snapping into the battery pack bracket is provided on the cover surface of the opening of the outer cover facing the installation cavity.

[0013] Furthermore, a connector for achieving electrical connection between the battery pack and the lawn mower body is installed on the battery pack bracket, a pressure plate covers the connector and is fixedly connected to the battery pack bracket, and a limiting structure for limiting the pressure plate is provided on the outer cover for covering the installation cavity.

[0014] Furthermore, a first stepped slide rail is provided on the inner side of the battery pack bracket, and a second stepped slide rail which can slide into the first stepped slide rail is provided on the side of the battery pack. A buckle is provided on the battery pack, and a locking position is provided on the battery pack bracket. After the battery pack completely slides into the battery pack bracket, the buckle is locked into the locking position to achieve mutual fixation of the battery pack and the battery pack bracket.

[0015] A lawn mower is provided with the battery pack installation structure mentioned above.

[0016] In summary, the utility model is beneficial in that:

[0017] 1. The installation cavity of the battery pack is opened toward the ground and is arranged at the bottom of the housing of the lawn mower, which reduces the surface space occupied by the battery pack installation structure of the lawn mower, so that small lawn mowers such as robot lawn mowers have larger internal installation space for components.

[0018] 2. A first limiting rib and / or a second limiting rib are used on the side wall of the installation cavity. In the application scenario where the battery pack is hung upside down in the installation cavity and the battery pack is used with a battery pack bracket, the two limiting ribs with a simple structure can realize the adaptive limiting of the battery pack in the installation cavity, which is beneficial to reduce or avoid the problem of noise caused by the vibration generated by the lawn mower during operation due to poor limiting of the battery pack.

[0019] 3. A sealing structure for the installation cavity and the outer cover is designed. In the application scenario where the battery pack is installed upside down, and under the premise that the above-mentioned limiting structure provides good limiting, the sealing structure not only further reduces the noise caused by the displacement of the battery pack due to the vibration of the lawn mower, but also prevents grass clippings, water mist, etc. generated by mowing from entering the installation cavity and causing the safety risk of short circuit of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the lawn mower of the utility model.

[0021] Figure 2 for Figure 1 Schematic diagram of the disassembled structure of the battery pack and outer cover.

[0022] Figure 3 Schematic diagram of the disassembled structure of the battery pack and bracket.

[0023] Figure 4 An exploded diagram of the battery pack and outer cover structure.

[0024] Figure 5 for Figure 1 Schematic diagram of the cross-section structure in.

[0025] Markings in the figure: 1. Lawn mower body; 11. Installation cavity; 12. First limiting rib; 13. Second limiting rib; 14. Sealing ring groove; 2. Battery pack; 21. Second stepped slide rail; 22. Inclined platform; 3. Bracket; 31. Side panel; 32. First stepped slide rail; 33. Slot; 4. Outer cover; 41. Flange; 42. Sealing ring; 5. Connector; 51. Pressure plate. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0027] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0028] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0030] This embodiment discloses a battery installation structure for a lawn mower, which is used for stably and safely placing a battery pack 2 inside the lawn mower and conveniently assembling and disassembling the battery pack 2 .

[0031] Reference Figure 1 , 2 A mounting cavity 11 is provided on the lawn mower body 1, and the mounting cavity 11 has an opening for placing the battery pack 2. The battery mounting structure includes a battery connecting assembly placed in the mounting cavity 11, and an outer cover 4 covering the opening of the mounting cavity 11. The outer cover 4 is fixedly connected to the lawn mower by screws.

[0032] The battery connection assembly includes a battery pack bracket 3, a connector 5 and a pressure plate 51, wherein the Figure 3 , 4 As shown, the battery pack holder 3 is slidably connected with the battery pack 2 along the direction a, and a first step-shaped slide rail 32 is provided on the inner side of the battery pack holder 3 along the direction a. Correspondingly, second step-shaped slide rails 21 for cooperating with the first step-shaped slide rail 32 are also provided on both sides of the battery pack 2 along the direction a. The two slide rails are used to guide and limit the connection direction between the battery pack holder 3 and the battery pack 2, and the battery pack holder 3 and the battery pack 2 are vertically connected and limited in a manner that the first step-shaped slide rail 32 is on the top and the second step-shaped slide rail 21 is on the bottom, so as to facilitate the overall taking and placing of the two and prevent them from falling.

[0033] Furthermore, a buckle 22 is protruding from the battery pack 2, and a latch position 33 is provided on the battery pack bracket 3. When the battery pack bracket 3 and the battery pack 2 slide into place along direction a, the buckle 22 is latched into the latch position 33 to limit the battery pack bracket 3 and the battery pack 2 in the sliding direction.

[0034] The connector 5 is arranged on the battery pack bracket 3. When the battery pack bracket 3 and the battery pack 2 are slid into place, the connector 5 is connected to the electrical connection interface of the battery pack 2. A lead is arranged on the connector 5 for realizing the electrical connection between the battery pack 2 and the electrical equipment on the lawn mower with the lawn mower as the load. A pressure plate 51 is also arranged on the battery pack bracket 3. The pressure plate 51 covers the connector 5. The pressure plate 51 is fixedly connected to the battery pack bracket 3 by screws to fix the connector 5 on the battery pack bracket 3. Preferably, a limiting structure for limiting the pressure plate 51 is arranged on the outer cover 4 for covering the installation cavity 11.

[0035] Before installing the battery pack 2 in the lawn mower, first connect the battery pack bracket 3 to the battery pack 2, and then place the battery pack 2 and the battery pack bracket 3 into the installation cavity 11. In order to ensure the stability of the battery pack 2 in the installation cavity 11 and avoid movement, a first limiting rib 12 and a second limiting rib 13 are respectively provided on the side walls of the installation cavity 11, wherein the battery pack bracket 3 is respectively provided with side panels 31 on both sides perpendicular to the direction a, and the two side panels 31 are respectively located on the two side walls of the battery pack bracket 3, and are used to cooperate with the first limiting rib 12 and the second limiting rib 13 for limiting.

[0036] Specifically, the first limiting ribs 12 on any side wall of the installation wall 11 include two first limiting ribs 12, and the two first limiting ribs 12 form a certain spacing and angle to allow the side panel 31 to be inserted along the depth direction of the installation cavity 11. When inserted into place, the two sides of the side panel 31 in the horizontal direction respectively abut against the two first limiting ribs 12 to form a horizontal limitation; and the second limiting rib 13 is located between the two first limiting ribs 12, abutting against the top of the side panel 31, forming a feedback of the vertical installation in place.

[0037] A sealing ring groove 14 is arranged around the peripheral wall of the installation cavity 11, and the opening of the sealing ring groove 14 is arranged downward. An elastic sealing ring 42 is arranged in the sealing ring groove 14, and the top of the outer cover 4 extends downward along the circumferential direction to form a surrounding flange 41. When the outer cover 4 is installed on the installation cavity 11, the flange 41 is inserted upward into the sealing ring groove 14, squeezing the sealing ring 42 to achieve sufficient circumferential sealing, thereby ensuring that no foreign matter or liquid enters the installation cavity 11.

[0038] Furthermore, a limiting portion is provided at the bottom of the outer cover 4 , and the limiting portion is formed in the form of a notch for clamping with the battery pack bracket 3 .

[0039] In this embodiment, the installation cavity 11 is arranged at the bottom of the housing of the lawn mower, and the opening is arranged toward the ground, which reduces the occupation of the surface space of the lawn mower, and the installation cavity 11 is arranged near the walking wheel axle of the lawn mower, rationalizing the overall center of gravity of the lawn mower, making the center of gravity more sinking, and enhancing the traveling stability of the lawn mower; more preferably, the installation cavity 11 is arranged between the walking wheel axle and the mowing disc of the lawn mower, and more preferably, the housing of the installation cavity 11 is distributed on both sides of the center position of the walking wheel axle, and the straight-line distance between the left and right distributed housings and the center position of the walking wheel axle is between 50-100mm, and the straight line is parallel to the walking wheel axle. The battery pack 2 is installed upwardly into the installation cavity. During installation, the limit portion forms a support limit at the bottom and both sides of the bracket 3, so that the user can directly support the bracket 3 through the outer cover 4. After the user can directly install the battery pack 2 into the installation cavity 11 through the outer cover 4, the outer cover 4 can be installed just in conjunction with the installation cavity 11.

[0040] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A battery pack installation structure, characterized in that: It comprises an installation cavity (11) provided on the lawn mower and used to accommodate a battery pack (2), wherein a limiting structure for limiting the position of the battery pack (2) and / or a battery pack bracket (3) is arranged in the installation cavity (11), and the battery pack (2) is arranged in the battery pack bracket (3); The limiting structure comprises a first limiting rib (12) and / or a second limiting rib (13) arranged on the side wall of the installation cavity (11); after the battery pack (2) is plugged into the battery pack bracket (3) and placed as a whole in the installation cavity (11), the first limiting rib (12) and / or the second limiting rib (13) press against the side plate (31) of the battery pack bracket (3) and press against the side wall of the battery pack (2).

2. The battery pack installation structure according to claim 1, characterized in that: The installation cavity (11) is arranged at the bottom of the housing of the lawn mower, and its opening faces the ground.

3. The battery pack installation structure according to claim 1 or 2, characterized in that: The installation cavity (11) is arranged between the running wheel shaft and the mowing disc of the lawn mower.

4. The battery pack installation structure according to claim 3, characterized in that: The shell of the installation cavity (11) is distributed on both sides of the center position of the running wheel axle, and the straight-line distance between the shell of the installation cavity (11) distributed on the left and right and the center position of the running wheel axle is between 50-100 mm, and the straight line is parallel to the running wheel axle.

5. The battery pack installation structure according to claim 1, characterized in that: The invention also comprises an outer cover (4) for covering the installation cavity (11); a sealing ring groove (14) is arranged around the peripheral wall of the installation cavity (11); a sealing ring (42) is arranged at the sealing ring groove (14); a surrounding flange (41) is arranged on the outer cover (4) for covering the installation cavity; the installation cavity (11) is interference-fitted with the flange (41) through the sealing ring (42) so as to seal and fix the outer cover (4) on the installation cavity (11).

6. The battery pack installation structure according to claim 1 or 5, characterized in that: It also comprises an outer cover (4) for covering the installation cavity (11), and a limiting portion for snapping into the battery pack bracket (3) is provided on the cover surface of the outer cover (4) facing the opening of the installation cavity (11).

7. The battery pack installation structure according to claim 4, characterized in that: A connector (5) for achieving electrical connection between the battery pack (2) and the lawn mower body is installed on the battery pack bracket (3); a pressure plate (51) covers the connector (5) and is fixedly connected to the battery pack bracket (3); and a limiting structure for limiting the pressure plate (51) is provided on the outer cover (4) for covering the installation cavity (11).

8. The battery pack installation structure according to claim 1, characterized in that: A first stepped slide rail (32) is arranged on the inner side of the battery pack bracket (3), a second stepped slide rail (21) which can slide into the first stepped slide rail (32) is arranged on the side of the battery pack (2), a buckle (22) is arranged on the battery pack (2), and a locking position (33) is arranged on the battery pack bracket (3); after the battery pack (2) completely slides into the battery pack bracket (3), the buckle (22) is locked into the locking position (33), thereby realizing mutual fixation between the battery pack (2) and the battery pack bracket (3).

9. A lawn mower, characterized in that: A battery pack installation structure as described in any one of claims 1-8 is arranged inside.

Images